Numbers 21:23

21:23 But Sihon did not permit Israel to pass through his border; he gathered all his forces together and went out against Israel into the wilderness. When he came to Jahaz, he fought against Israel.

Numbers 25:8

25:8 and went after the Israelite man into the tent and thrust through the Israelite man and into the woman’s abdomen. So the plague was stopped from the Israelites.